Reference number
ISO 731-4:1977
© ISO 2024
ISO 731-4:1977
Formic acid for industrial use — Methods of test — Part 4: Visual limit test for inorganic chlorides
Edition 1
1977-02
Withdrawn
Withdrawn (Edition 1, 1977)

Abstract

Applicable to products having inorganic chlorides contents in the range 0,0005 to 0,5 % (m/m). Comparison of the turbidity, obtained by the addition of silver nitrate to a solution prepared from a test portion, with that similarly obtained from a standard chloride solution.

General information

  • Status
     : Withdrawn
    Publication date
     : 1977-02
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 2
  • Technical Committee :
    ISO/TC 47
    ICS :
    71.080.40 
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